Most meningiomas grow intracranially, and primary intraosseous meningioma is rarely
reported. We present two rare surgical cases of giant intraosseous meningothelial
meningioma. The first patient was a 35-year-old male with parietal skull deformity
without neurological symptoms. Total resection was successful. The origin was the
parasagittal intraosseous layer, and the superior sagittal sinus was partially opened.
The second patient was a 20-year-old female with a slightly upward protrusion of the
frontal skull without pain or neurological deficits. The lesion was totally resected,
and the origin was the parasagittal intraosseous layer invading into the dura matter
and subcutaneous layer. The clinical management of these cases presented a surgical
challenge because of detachment and repair from venous sinuses. The current report
provides surgical tips for such rare diseases and is a good reference for the future
treatment of similar diseases.
Key-words:
Calvarium - intraosseous meningioma - meningioma